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Conversion Factors

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Conversion Factors A


To Convert Into Multiply By

Abcoulomb Acre Acre Acre Acre acres acres acres acres acres acre-feet acre-feet amperes/sq cm amperes/sq cm amperes/sq in amperes/sq in amperes/sq meter amperes/sq meter ampere-hours ampere-hours ampere-turns ampere-turns/cm ampere-turns/cm ampere-turns/cm ampere-turns/in ampere-turns/in ampere-turns/in ampere-turns/meter ampere-turns/meter ampere-turns/meter Angstrom unit Angstrom unit Angstrom unit Are Ares ares ares Astronomical Unit Atmospheres atmospheres atmospheres atmospheres atmospheres atmospheres atmospheres atmospheres

Statcoulombs Sq chain (Gunters) Rods Square links (Gunters) Hectare or sq hectometer Roods sq feet sq meters sq miles sq yards cu feet gallons amps/sq in amps/sq meter amps/sq cm amps/sq meter amps/sq cm amps/sq in coulombs faradays gilberts amp-turns/in amp-turns/meter gilberts/cm amp-turns/cm amp-turns/meter gilberts/cm amp-turns/cm amp-turns/in gilberts/cm inch Meter Micron or (Mu) Acre (US) sq yards acres sq meters Kilometers Ton/sq inch cms of mercury ft of water (at 4°C) in. of mercury (at 0°C) kgs/sq cm kgs/sq meter pounds/sq in tons/sq ft

2.998 x 10 6 10 160 1 x 10 5 0.4047 4.0 43,560.0 4,047.0 1,562 x 10 –3 4,840.0 43,560.0 3.259 x 10 5 6.452 10 4 0.1550 1,550.0 10 –4 6.452 x 10 –4 3,600.0 0.03731 1.257 2.540 100.0 1.257 0.3937 39.37 0.4950 0.01 0.0254 0.01257 3937 x 10 –9 1 x 10 –10 1 x 10 –4 0.02471 119.60 0.02471 100.0 1.495 x 10 8 0.007348 76.0 33.90 29.92 1.0333 10,332.0 14.70 1.058

Conversion Factors B



Barrels (U.S., dry) Barrels (U.S., dry) Barrels (U.S., liquid) barrels (oil) bars bars bars bars bars Baryl Bolt (U.S. Cloth) BTU Btu Btu Btu Btu Btu Btu Btu Btu Btu/hr Btu/hr Btu/hr Btu/hr Btu/min Btu/min Btu/min Btu/min Btu/sq ft/min Bucket (Br. dry) bushels bushels bushels bushels bushels bushels bushels

cu inches quarts (dry) gallons gallons (oil) atmospheres dynes/sq cm kgs/sq meter pounds/sq ft pounds/sq in Dyne/sq cm Meters Liter—Atmosphere ergs foot-lbs gram-calories horsepower-hrs joules kilogram-calories kilogram-meters kilowatt-hrs foot-pounds/sec gram-cal/sec horsepower-hrs watts foot-pounds/sec horsepower kilowatts watts watts/sq in Cubic Cm (mL) cu ft cu in cu meters liters pecks pints (dry) quarts (dry)

7,056.0 105.0 31.5 42.0 0.9869 10 6 1.020 x 10 4 2,089.0 14.50 1.000 36.576 10.409 1.0550 x 10 10 778.3 252.0 3.931 x 10 –4 1,054.8 0.2520 107.5 2.298 x 10 –4 0.2162 0.0700 3.929 x 10 –4 0.2931 12.96 0.02356 0.01757 17.57 0.1221 1.818 x 10 4 1.2445 2,150.4 0.03524 35.24 4.0 64.0 32.0

Conversion Factors C



Calories, gram (mean) Candle/sq cm Candle/sq inch Centares (centiares) Centigrade centigrams Centiliter Centiliter Centiliter centiliters centimeters centimeters centimeters centimeters centimeters centimeters centimeters centimeters centimeter-dynes centimeter-dynes centimeter-dynes centimeter-grams centimeter-grams centimeter-grams centimeters of mercury centimeters of mercury centimeters of mercury centimeters of mercury centimeters of mercury centimeters/sec centimeters/sec centimeters/sec centimeters/sec centimeters/sec centimeters/sec centimeters/sec centimeters/sec/sec centimeters/sec/sec centimeters/sec/sec centimeters/sec/sec Chain Chain Chains (surveyors’ or Gunter’s) circular mils circular mils circular mils Circumference Cords Cord feet Cord Cord (wood) Cord Coulomb coulombs coulombs/sq cm coulombs/sq cm coulombs/sq in coulombs/sq in coulombs/sq meter coulombs/sq meter

BTU (mean) Lamberts Lamberts sq meters Fahrenheit grams Ounce Fluid (U.S.) Cubic inch. drams liters feet inches kilometers meters miles millimeters mils yards cm-grams meter-kgs pound-feet cm-dynes meter-kgs pound-feet atmospheres feet of water kgs/sq meter pounds/sq ft pounds/sq in feet/min feet/sec kilometers/hr knots meters/min miles/hr miles/min feet/sec/sec kms/hr/sec meters/sec/sec miles/hr/sec Inches meters yards sq cms sq mils sq inches Radians cord feet cu feet cu meter cu feet steres Statcoulombs faradays coulombs/sq in coulombs/sq meter coulombs/sq cm coulombs/sq meter coulombs/sq cm coulombs/sq in

3.9685 x 10 –3 3.142 0.4870 1.0 (C° x 9/5) +32 0.01 0.3382 0.6103 2.705 0.01 3.281 x 10 –2 0.3937 10 –5 0.01 6.214 x 10 –6 10.0 393.7 1.094 x 10 –2 1.020 x 10 –3 1.020 x 10 –6 7.376 x 10 –6 980.7 10 –5 7.233 x 10 –5 0.01316 0.4461 136.0 27.85 0.1934 1.1969 0.03281 0.036 0.1943 0.6 0.02237 3.728 x 10 –4 0.03281 0.036 0.01 0.02237 792.0 20.12 22.0 5.067 x 10 –4 0.7854 7.854 x 10 –7 6.283 8.0 16 3.6245 128 3.625 2.998 x 10 9 1.036 x 10 –5 64.52 10 4 0.1550 1,550.0 10 –4 6.452 x 10 –4

Conversion Factors C



cubic centimeters (mL) cubic centimeters (mL) cubic centimeters (mL) cubic centimeters (mL) cubic centimeters (mL) cubic centimeters (mL) cubic centimeters (mL) cubic centimeters (mL) cubic feet cubic feet cubic feet cubic feet cubic feet cubic feet cubic feet cubic feet cubic feet cubic feet cubic feet cubic feet/min cubic feet/min cubic feet/min cubic feet/min cubic feet/sec cubic feet/sec cubic inches cubic inches cubic inches cubic inches cubic inches cubic inches cubic inches cubic inches cubic inches cubic inches cubic meters cubic meters cubic meters cubic meters cubic meters cubic meters cubic meters cubic meters cubic meters cubic meters cubic yards cubic yards cubic yards cubic yards cubic yards cubic yards cubic yards cubic yards cubic yards/min cubic yards/min cubic yards/min

cu feet cu inches cu meters cu yards gallons (U.S. liq) liters pints (U.S. liq) quarts (U.S. liq) bushels (dry) cord (wood) cu cms (mL) cu inches cu meters cu yards gallons (U.S. liq) liters pints (U.S. liq) quarts (U.S. liq) ton (shipping) cu cms/sec gallons/sec liters/sec pounds of water/min million gals/day gallons/min bushel cu cms (mL) cu feet cu meters cu yards gallons liters mil-feet pints (U.S. liq) quarts (U.S. liq) bushels (dry) cords cu cms (mL) cu feet cu inches cu yards gallons (U.S. liq) liters pints (U.S. liq) quarts (U.S. liq) cu cms (mL) cu feet cu inches cu meters gallons (U.S. liq) liters pints (U.S. liq) quarts (U.S. liq) cubic ft/sec gallons/sec liters/sec

3.531 x 10 –5 0.06102 10 –6 1.308 x 10 –6 2.642 x 10 –4 0.001 2.113 x 10 –3 1.057 x 10 –3 0.8036 7.81 x 10 –3 28,320.0 1,728.0 0.02832 0.03704 7.48052 28.32 59.84 29.92 0.025 472.0 0.1247 0.4720 62.43 0.646317 448.831 4.65 x 10 –4 16.39 5.787 x 10 –4 1.639 x 10 –5 2.143 x 10 –5 4.329 x 10 –3 0.01639 1.061 x 10 5 0.03463 0.01732 28.38 0.2759 10 6 35.31 61,023.0 1,308.0 264.2 1,000.0 2,113.0 1,057.0 7,646 x 10 5 27.0 46,656.0 0.7646 202.0 764.6 1,615.9 807.9 0.45 3.367 12.74

Conversion Factors D



Dalton days decigrams deciliters decimeter decimeter decimeters degrees (angle) degrees (angle) degrees (angle) degrees/sec degrees/sec degrees/sec dekagrams dekaliters dekameters Drams (apothecaries’ or troy) Drams (apothecaries’ or troy) Drams (U.S., fluid or apoth.) drams drams drams dram Dyne/cm Dyne/sq cm Dyne/sq cm Dyne/sq cm dynes dynes dynes dynes dynes dynes dynes/sq

Gram seconds grams liters inches feet meters quadrants radians seconds radians/sec revolutions/min revolutions/sec grams liters meters ounces (avoidupois) ounces (troy) cubic cm (mL) grams grains ounces mL Erg/sq millimeter Atmospheres Inch of Mercury at 0°C Inch of Water at 4° C grams joules/cm joules/meter (newtons) kilograms poundals pounds cm bars

1.650 x 10 –24 86,400.0 0.1 0.1 0.254 3.0487 0.1 0.01111 0.01745 3,600.0 0.01745 0.1667 2.778 x 10 –3 10.0 10.0 10.0 0.1371429 0.125 3.6967 1.7718 27.3437 0.0625 3.696 0.01 9.869 x 10 –7 2.953 x 10 –5 4.015 x 10 –4 1.020 x 10 –3 10 –7 10 –5 1.020 x 10 –6 7.233 x 10 –5 2.248 x 10 –6 10 6

Conversion Factors E



Ell Ell Em, Pica Em, Pica Erg/sec ergs ergs ergs ergs ergs ergs ergs ergs ergs ergs ergs ergs/sec ergs/sec ergs/sec ergs/sec ergs/sec ergs/sec

Cm Inches Inch Cm Dyne-cm/sec BTU dyne-centimeters foot-pounds gram-calories gram-cms horsepower-hrs joules kg-calories kg-meters kilowatt-hrs watt-hours Btu/min ft-lbs/min ft-lbs/sec horsepower kg-calories/min kilowatts

114.30 45 0.167 0.4233 1.000 9.480 x 10 –11 1.0 7.367 x 10 –6 0.2389 x 10 7 1.020 x 10 –3 3.7250 x 10 –14 10 –7 2.389 x 10 –11 1.020 x 10 –8 0.2778 x 10 –13 0.2778 x 10 –10 5,688 x 10 –9 4,427 x 10 –6 7.3756 x 10 –8 1.341 x 10 –10 1.433 x 10 –9 10 –10

Conversion Factors F



farads Faraday/sec faradays faradays Fathom fathoms feet feet feet feet feet feet feet feet feet feet of water feet of water feet of water feet of water feet of water feet of water feet/min feet/min feet/min feet/min feet/min feet/sec feet/sec feet/sec feet/sec feet/sec feet/sec feet/sec/sec feet/sec/sec feet/sec/sec feet/sec/sec feet/100 feet Foot—candle foot-pounds foot-pounds foot-pounds foot-pounds foot-pounds foot-pounds foot-pounds foot-pounds foot-pounds/min foot-pounds/min foot-pounds/min foot-pounds/min foot-pounds/min foot-pounds/sec foot-pounds/sec foot-pounds/sec foot-pounds/sec foot-pounds/sec Furlongs furlongs furlongs furlongs

microfarads Ampere (absolute) ampere-hours coulombs Meter feet centimeters inches kilometers meters miles (neut.) miles (stat.) millimeters mils yards atmospheres in. of mercury kgs/sq cm kgs/sq meter pounds/sq ft pounds/sq in cms/sec feet/sec kms/hr meters/min miles/hr cms/sec kms/hr knots meters/min miles/hr miles/min cms/sec/sec kms/hr/sec meters/sec/sec miles/hr/sec per cent grade Lumen/sq meter Btu ergs gram-calories hp-hrs joules kg-calories kg-meters kilowatt-hrs Btu/min foot-pounds/sec horsepower kg-calories/min kilowatts Btu/hr Btu/min horsepower kg-calories/min kilowatts miles (U.S.) rods feet mile (sta.)

10 6 9.6500 x 10 4 26.80 9.649 x 10 4 1.828804 6.0 30.48 12.0 3.048 x 10 –4 0.3048 1.645 x 10 –4 1.894 x 10 –4 304.8 1.2 x 10 4 0.333 0.02950 0.8826 0.03048 304.8 62.43 0.4335 0.5080 0.01667 0.01829 0.3048 0.01136 30.48 1.097 0.5921 18.29 0.6818 0.01136 30.48 1.097 0.3048 0.6818 1.0 10.764 1.286 x 10 –3 1.356 x 10 7 0.3238 5.050 x 10 –7 1.356 3.24 x 10 –4 0.1383 3.766 x 10 –7 1.286 x 10 –3 0.01667 3.030 x 10 –5 3.24 x 10 –4 2.260 x 10 –5 4.6263 0.07717 1.818 x 10 –3 0.01945 1.356 x 10 –3 0.125 40.0 660.0 0.125

Conversion Factors G



gallons gallons gallons gallons gallons gallons gallons (liq Br. Imp.) gallons (U.S.) gallons of water gallons/min gallons/min gallons/min gausses gausses gausses gausses gilberts gilberts/cm gilberts/cm gilberts/cm Gills (British) gills gills Grade Grains grains (troy) grains (troy) grains (troy) grains (troy) grains/U.S. gal grains/U.S. gal grains/Imp. gal grams grams grams grams grams grams grams grams grams grams grams/cm grams/cu cm grams/cu cm grams/cu cm grams/liter grams/liter grams/liter grams/liter grams/sq cm gram-calories gram-calories gram-calories gram-calories gram-calories gram-calories gram/calories/sec gram-centimeters gram-centimeters gram-centimeters gram-centimeters gram-centimeters

cu cms (mL) cu feet cu inches cu meters cu yards liters gallons (U.S. liq) gallons (Imp.) pounds of water cu ft/sec liters/sec cu ft/hr lines/sq in webers/sq cm webers/sq in webers/sq meter ampere-turns amp-turns/cm amp-turns/in amp-turns/meter cubic cm (mL) liters pints (liq) Radian drams (avoirdupois) grains (avdp) grams ounces (avdp) pennyweight (troy) parts/million pounds/million gal parts/million dynes grains joules/cm joules/meter (newtons) kilograms milligrams ounces (avdp) ounces (troy) poundals pounds pounds/inch pounds/cu ft pounds/cu in pounds/mil-foot grains/gal pounds/1,000 gal pounds/cu ft parts/million pounds/sq ft Btu ergs foot-pounds horsepower/hrs kilowatt-hrs watt-hrs Btu/hr Btu ergs joules kg-cal kg-meters

3,785.0 0.1337 231.0 3.785 x 10 –3 4.951 x 10 –3 3.785 1.20095 0.83267 8.3453 2.228 x 10 –3 0.06308 8.0208 6.452 10 –8 6.452 x 10 –4 10 –4 0.7958 0.7958 2.021 79.58 142.07 0.1183 0.25 0.01571 0.03657143 1.0 0.06480 2.0833 x 10 –3 0.04167 17.118 142.86 14.286 980.7 15.43 9.807 x 10 –5 9.807 x 10 3 0.001 1,000.0 0.03527 0.03215 0.07093 2.205 x 10 –3 5.600 x 10 –3 62.43 0.03613 3.405 x 10 –7 58.417 8.345 0.062427 1,000.0 2.0481 3.9683 x 10 –3 4.1868 x 10 7 3.0880 1.5596 x 10 –6 1.1630 x 10 –6 1.1630 x 10 –3 14.286 9.297 x 10 –8 980.7 9.807 x 10 –5 2.343 x 10 –8 10 –5

Conversion Factors H



Hand hectares hectares hectograms hectoliters hectometers hectowatts henries Hogsheads (British) Hogsheads (U.S.) Hogsheads (U.S.) horsepower horsepower horsepower horsepower (metric) (542.5 ft lb/sec) horsepower (550 ft lb/sec) horsepower horsepower horsepower horsepower (boiler) horsepower (boiler) horsepower-hrs horsepower-hrs horsepower-hrs horsepower-hrs horsepower-hrs horsepower-hrs horsepower-hrs horsepower-hrs hours hours Hundredweights Hundredweights (long) Hundredweights (short) Hundredweights (short) Hundredweights (short) Hundredweights (short) Hundredweight (cwt)

Cm acres sq feet grams liters meters watts millihenries cubic ft cubic ft gallons (U.S.) Btu/min foot-lbs/min foot-lbs/sec horsepower (550 ft lb/sec) horsepower (metric) (542.5 ft lb/sec) kg-calories/min kilowatts watts Btu/hr kilowatts Btu ergs foot-lbs gram-calories joules kg-calories kg-meters kilowatt-hrs days weeks (long) pounds tons (long) ounces (avoirdupos) pounds tons (metric) tons (long) quarters

10.16 2.471 1.076 x 10 5 100 100 100 100 1,000.0 10.114 8.42184 63 42.44 33,000.0 550.0 0.9863 1.014 10.68 0.7457 745.7 33.479 9.803 2,547.0 2.6845 x 10 13 1.98 x 10 6 641,190.0 2.684 x 10 6 641.1 2.737 x 10 5 0.7457 4.167 x 10 –2 5.952 x 10 –3 112 0.05 1,600 100 0.0453592 0.0446429 4.0

Conversion Factors I



inches inches inches inches inches inches inches inches inches of mercury inches of mercury inches of mercury inches of mercury inches of mercury inches of mercury inches of water (at 4° C) inches of water (at 4° C) inches of water (at 4° C) inches of water (at 4° C) inches of water (at 4° C) inches of water (at 4° C) International Ampere International Volt International volt International volt

centimeters feet link meters miles millimeters mils yards atmospheres feet of water kgs/sq cm kgs/sq meter pounds/sq ft pounds/sq in atmospheres inches of mercury kgs/sq cm ounces/sq in pounds/sq ft pounds/sq in Ampere (absolute) Volts (absolute) Joules (absolute) Joules

2.540 0.0833 0.12626 2.540 x 10 –2 1.578 x 10 –5 25.40 1,000.0 2.778 x 10 –2 0.03342 1.133 0.03453 345.3 70.73 0.4912 2.458 x 10 –3 0.07355 2.540 x 10 –3 0.5781 5.204 0.03613 0.9998 1.0003 1.593 x 10 –19 9.654 x 10 4

Conversion Factors J



joules joules joules joules joules joules joules/cm joules/cm joules/cm joules/cm joules/cm

Btu ergs foot-pounds kg-calories kg-meters watt-hrs grams dynes joules/meter (newtons) poundals pounds

9.480 x 10 –4 10 7 0.7376 2.389 x 10 –4 0.1020 2.778 x 10 –4 1.020 x 10 4 10 7 100 723.3 22.48

Conversion Factors K



kilograms kilograms kilograms kilograms kilograms kilograms kilograms kilograms kilograms/cu meter kilograms/cu meter kilograms/cu meter kilograms/cu meter kilograms/meter kilograms/sq cm kilograms/sq cm kilograms/sq cm kilograms/sq cm kilograms/sq cm kilograms/sq cm kilograms/sq meter kilograms/sq meter kilograms/sq meter kilograms/sq meter kilograms/sq meter kilograms/sq meter kilograms/sq mm kilogram-calories kilogram-calories kilogram-calories kilogram-calories kilogram-calories kilogram-calories kilogram-calories kilogram-meters kilogram-meters kilogram meters kilogram meters kilogram meters kilogram meters kilolines kiloliters kilometers kilometers kilometers kilometers kilometers kilometers kilometers kilometers/hr kilometers/hr kilometers/hr kilometers/hr kilometers/hr kilometers/hr

dynes grams joules/cm joules/meter (newtons) poundals pounds tons (long) tons (short) grams/cu cm pounds/cu ft pounds/cu in pounds/mil-foot pounds/ft Dynes atmospheres feet of water inches of mercury pounds/sq ft pounds/sq in atmospheres bars feet of water inches of mercury pounds/sq ft pounds/sq in kgs/sq meter Btu foot-pounds hp-hrs joules kg-meters kilojoules kilowatt-hrs Btu ergs foot-pounds joules kg-calories kilowatt-hrs maxwells liters centimeters feet inches meters miles millimeters yards cms/sec feet/min feet/sec knots meters/min miles/hr

980,665.0 1,000.0 0.09807 9.807 70.93 2.205 9.842 x 10 –4 1.102 x 10 –3 0.001 0.06243 3.613 x 10 –5 3.405 x 10 –10 0.6720 980,665.0 0.9678 32.81 28.96 2,048.0 14.22 9.678 x 10 –5 98.07 x 10 –6 3.281 x 10 –3 2.896 x 10 –3 0.2048 1.422 x 10 –3 10 6 3.968 3,088.0 1.560 x 10 –3 4,186.0 426.9 4.186 1.163 x 10 –3 9.294 x 10 –3 9.804 x 10 7 7.233 9.804 2.342 x 10 –3 2.723 x 10 –6 1,000.0 1,000.0 10 5 3.281 3.937 x 10 4 1,000.0 0.6214 10 6 1,094.0 27.78 54.68 0.9113 0.5396 16.67 0.6214

Conversion Factors K



kilometers/hr/sec kilometers/hr/sec kilometers/hr/sec kilometers/hr/sec kilowatts kilowatts kilowatts kilowatts kilowatts kilowatts kilowatt-hrs kilowatt-hrs kilowatt-hrs kilowatt-hrs kilowatt-hrs kilowatt-hrs kilowatt-hrs kilowatt-hrs kilowatt-hrs kilowatt-hrs knots knots knots knots knots knots

cms/sec/sec ft/sec/sec meters/sec/sec miles/hr/sec BTU/min foot-lbs/min foot-lbs/sec horsepower kg-calories/min watts Btu ergs foot-lbs gram-calories horsepower-hrs joules kg-calories kg-meters pounds of water evaporated from and at 212°F pounds of water raised from 62° to 212°F feet/hr kilometer/hr nautical miles/hr statute miles/hr yards/hr feet/sec

27.78 0.9113 0.2778 0.6214 56.92 4.426 x 10 4 737.6 1.341 14.34 1,000.0 3,413.0 3.600 x 10 13 2.655 x 10 6 859,850.0 1.341 3.6 x 10 6 860.5 3.671 x 10 6 3.53 22.75 6,080.0 1.8532 1.0 1.151 2,027.0 1.689

Conversion Factors L



league Light year Light year lines/sq cm lines/sq in lines/sq in lines/sq in lines/sq in links (engineer’s) links (surveyor’s) links liters liters liters liters liters liters liters liters liters liters liters/min liters/min lumens/sq ft Lumen Lumen Lumen/sq ft lux

miles (approx) Miles Kilometers gausses gausses webers/sq cm webers/sq in webers/sq meter inches inches rods bushels (U.S. dry) cu cm (mL) cu feet cu inches cu meters cu yards gallons (U.S. liq) pints (U.S. liq) quarts (U.S. liq) quarts (U.S. dry) cu ft/sec gals/sec foot-candles Spherical candle power Watt Lumen/sq meter foot-candles

3.0 5.9 x 10 12 9.46091x10 12 1.0 0.1550 1.550 x 10 –9 10 –8 1.550 x 10 –5 12.0 7.92 0.04 0.02838 1,000.0 0.03531 61.02 0.001 1.308 x 10 –3 0.2642 2.113 1.057 0.908 5.886 x 10 –4 4.403 x 10 –3 1.0 0.07958 0.001496 10.76 0.0929

Conversion Factors M



maxwellls maxwells megalines megohms megohms meters meters meters meters meters meters meters meters meters meters/min meters/min meters/min meters/min meters/min meters/min meters/sec meters/sec meters/sec meters/sec meters/sec meters/sec meters/sec/sec meters/sec/sec meters/sec/sec meters/sec/sec meters-kilograms meter-kilograms meter-kilograms microfarad micrograms microhms microhms microliters Microns mil miles (naut) miles (naut) miles (naut) miles (naut) miles (naut) miles (naut) miles (statute) miles (statute) miles (statute) miles (statute) miles (statute) miles (statute) miles (statute) miles (statute)

kilolines webers maxwells microhms ohms centimeters feet inches kilometers miles (naut) miles (stat) millimeters yards varas cms/sec feet/min feet/sec kms/hr knots miles/hr feet/min feet/sec kilometers/hr kilometers/min miles/hr miles/min cms/sec/sec ft/sec/sec kms/hr/sec miles/hr/sec cm-dynes cm-grams pound-feet farads grams megohms ohms liters meters inch feet kilometers league meters miles (statute) yards centimeters feet furlongs inches kilometers meters miles (naut) yards

0.001 10 –8 10 6 10 12 10 6 100 3.281 39.37 0.001 5.396 x 10 –4 6.214 x 10 4 1,000.0 1.094 1.179 1.667 3.281 0.05468 0.06 0.03238 0.03728 196.8 3.281 3.6 0.06 2.237 0.03728 100 3.281 3.6 2.237 9.807 x 10 7 10 5 7.233 10 –6 10 –6 10 –12 10 –6 10 –6 1 x 10 –6 0.001 6,080.27 1,853.0 0.3333 1,853.0 1.1516 2,027.0 1.609 x 10 5 5.280 8.0 6.336 x 10 4 1.609 1,609.0 0.8684 1,760.0

Conversion Factors M



miles/hr miles/hr miles/hr miles/hr miles/hr miles/hr miles/hr miles/hr miles/hr/sec miles/hr/sec miles/hr/sec miles/hr/sec miles/min miles/min miles/min miles/min miles/min mil-feet milliers Millimicrons Milligrams milligrams milligrams/liter millihenries milliliters millimeters millimeters millimeters millimeters millimeters millimeters millimeters millimeters million gals/day mils mils mils mils mils miner’s inches Minims (British) Minims (U.S., fluid) minutes (angles) minutes (angles) minutes (angles) minutes (angles) myriagrams myriameters myriawatts

cms/sec feet/min feet/sec kms/hr kms/min knots meters/min miles/min cms/sec/sec feet/sec/sec kms/hr/sec meters/sec/sec cms/sec feet/sec kms/min knots/min miles/hr cu inches kilograms meters grains grams parts/million henries liters centimeters feet inches kilometers meters miles mils yards cu ft/sec centimeters feet inches kilometers yards cu ft/min cubic cm (mL) cubic cm (mL) degrees quadrants radians seconds kilograms kilometers kilowatts

44.70 88 1.467 1.609 0.02682 0.8684 26.82 0.1667 44.70 1.467 1.609 0.4470 2,682.0 88 1.609 0.8684 60 9.425 x 10 –6 1,000.0 1 x 10 –9 0.01543236 0.001 1.0 0.001 0.001 0.1 3.281 x 10 –3 0.03937 10 –6 0.001 6.214 x 10 –7 39.37 1.094 x 10 –3 1.54723 2.540 x 10 –3 8.333 x 10 –5 0.001 2.540 x 10 –8 2.778 x 10 –5 1.5 0.059192 0.061612 0.01667 1.852 x 10 –4 2.909 x 10 –4 60 10 10 10

Conversion Factors N



nepers Newton

decibels Dynes

8.686 1 x 10 5

Conversion Factors O



OHM (International) ohms ohms ounces ounces ounces ounces ounces ounces ounces ounces (fluid) ounces (fluid) ounces (troy) ounces (troy) ounces (troy) ounces (troy) ounces (troy) Ounce/sq inch ounces/sq in

OHM (absolute) megohms microhms drams grains grams pounds ounces (troy) tons (long) tons (metric) cu inches liters grains grams ounces (advp) pennyweights (troy) pounds (troy) Dynes/sq cm pounds/sq in

1.0005 10 –6 10 6 16.0 437.5 28.349527 0.0625 0.9115 2.790 x 10 –5 2.835 x 10 –5 1.805 0.02957 480.0 31.103481 1.09714 20.0 0.08333 4,309.0 0.0625

Conversion Factors P



Parsec Parsec parts/million parts/million parts/million Pecks (British) Pecks (British) Pecks (U.S.) Pecks (U.S.) Pecks (U.S.) Pecks (U.S.) pennyweights (troy) pennyweights (troy) pennyweights (troy) pennyweights (troy) pints (dry) pints (liq) pints (liq) pints (liq) pints (liq) pints (liq) pints (liq) pints (liq) pints (liq) Planck’s quantum Poise pounds (avoirdupois) poundals poundals poundals poundals poundals poundals pounds pounds pounds pounds pounds pounds pounds pounds pounds pounds pounds pounds pounds pounds (troy) pounds (troy) pounds (troy) pounds (troy) pounds (troy) pounds (troy) pounds (troy) pounds (troy) pounds (troy)

Miles Kilometers grains/U.S. gal grains/Imp. gal pounds/million gal cubic inches liters bushels cubic inches liters quarts (dry) grains ounces (troy) grams pounds (troy) cu inches cu cms (mL) cu feet cu inches cu meters gallons liters quarts (liq) cu yards Erg—second Gram/cm sec ounces (troy) dynes grams joules/cm joules/meter (newtons) kilograms pounds drams dynes grains grams joules/cm joules/meter (newtons) kilograms ounces ounces (troy) poundals pounds (troy) quarters tons (short) grains grams ounces (advp) ounces (troy) pennyweights (troy) pounds (advp) tons (long) tons (metric) tons (short)

19 x 10 12 3.084 x 10 13 0.0584 0.07016 8.345 554.6 9.091901 0.25 537.605 8.809582 8.0 24.0 0.05 1.55517 4.1667 x 10 –3 33.60 473.2 0.01671 28.87 4.732 x 10 –4 6.189 x 10 –4 0.125 0.4732 0.5 6.624 x 10 –27 1.0 14.5833 13,826.0 14.1 1.383 x 10 –3 0.1383 0.0141 0.03108 256.0 44.4823 x 10 4 7,000.0 453.5924 0.04448 4.448 0.4536 16.0 14.5833 32.17 1.21528 0.04 0.0005 5,760.0 373.24177 13.1657 12 240 0.822857 3.6735 x 10 –4 3.7324 x 10 4 4.1143 x 10 4

Conversion Factors P



pounds of water pounds of water pounds of water pounds of water/min pound-feet pound-feet pound-feet pounds/cu ft pounds/cu ft pounds/cu ft pounds/cu ft pounds/cu in pounds/cu in pounds/cu in pounds/cu in pounds/ft pounds/in pounds/mil-foot pounds/sq ft pounds/sq ft pounds/sq ft pounds/sq ft pounds/sq ft pounds/sq in pounds/sq in pounds/sq in pounds/sq in pounds/sq in

cu feet cu inches gallons cu ft/sec cm-dynes cm-grams meter-kgs grams/cu cm kgs/cu meter pounds/cu in pounds/mil-foot gms/cu cm kgs/cu meter pounds/cu ft pounds/mil-foot kgs/meter gms/cm gms/cu cm atmospheres feet of water inches of mercury kgs/sq meter pounds/sq in atmospheres feet of water inches of mercury kgs/sq meter pounds/sq ft

0.01602 27.68 0.1198 2.670 x 10 –4 1.356 x 10 7 13,825.0 0.1383 0.01602 16.02 5.787 x 10 –4 5.456 x 10 –9 27.68 2.768 x 10 4 1,728.0 9.425 x 10 –6 1.488 178.6 2.306 x 10 6 4.725 x 10 –4 0.01602 0.01414 4.882 6.944 x 10 3 0.06804 2.307 2.036 703.1 144

Conversion Factors Q



quadrants (angle) quadrants (angle) quadrants (angle) quadrants (angle) quarter quarter quarts (dry) quarts (dry) quarts (dry) quarts (dry) quarts (liq) quarts (liq) quarts (liq) quarts (liq) quarts (liq) quarts (liq) quarts (liq)

degrees minutes radians seconds pounds cwt liters cu inches pints peck cu cms (mL) cu feet cu inches cu meters cu yards gallons liters

90 5,400.0 1.571 3.24x10 5 25 0.25 1.10132 67.2 2.0 0.125 946.4 0.03342 57.75 9.464 x 10 –4 1.238 x 10 –3 0.25 0.9463

Conversion Factors R



radians radians radians radians radians/sec radians/sec radians/sec radians/sec/sec radians/sec/sec radians/sec/sec revolutions revolutions revolutions revolutions/min revolutions/min revolutions/min revolutions/min/min revolutions/min/min revolutions/min/min revolutions/sec revolutions/sec revolutions/sec revolutions/sec/sec revolutions/sec/sec revolutions/sec/sec Rod Rod Rods Rods (Surveyors’ meas.) Rods (Surveyors’ meas.) rods roods roods

degrees minutes quadrants seconds degrees/sec revolutions/min revolutions/sec revs/min/min revs/min/sec revs/sec/sec degrees quadrants radians degrees/sec radians/sec revs/sec radians/sec/sec revs/min/sec revs/sec/sec degrees/sec radians/sec revs/min radians/sec/sec revs/min/min revs/min/sec Chain (Gunters) Meters furlong links yards feet sq rods acre

57.30 3,438.0 0.6366 2.063 x 10 5 57.30 9.549 0.1592 573 9.549 0.1592 360 4.0 6.283 6.0 0.1047 0.01667 1.745 x 10 –3 0.01667 2.778 x 10 –4 360 6.283 60 6.283 3,600.0 60.0 0.25 5.029 0.025 25 5.5 16.5 40 0.25

Conversion Factors S



Scruples seconds (angle) seconds (angle) seconds (angle) seconds (angle) Slug Slug Sphere square centimeters square centimeters square centimeters square centimeters square centimeters square centimeters square centimeters square chains square feet square feet square feet square feet square feet square feet square feet square feet square inches square inches square inches square inches square inches square inches square kilometers square kilometers square kilometers square kilometers square kilometers square kilometers square kilometers square meters square meters square meters square meters square meters square meters square meters square miles square miles square miles square miles square miles square miles square millimeters square millimeters square millimeters square millimeters

grains degrees minutes quadrants radians Kilogram Pounds Steradians circular mils sq feet sq inches sq meters sq miles sq millimeters sq yards acre acres circular mils sq cms sq inches sq meters sq miles sq millimeters sq yards circular mils sq cms sq feet sq millimeters sq mils sq yards acres sq cms sq ft sq inches sq meters sq miles sq yards acres sq cms sq feet sq inches sq miles sq millimeters sq yards acres sq feet sq kms sq meters sq yards township circular mils sq cms sq feet sq inches

20 2.778 x 10 –4 0.01667 3.087 x 10 –6 4.848 x 10 –6 14.59 32.17 12.57 1.973 x 10 5 1.076 x 10 –3 0.1550 0.0001 3.861 x 10 –11 100 1.196 x 10 –4 0.1 2.296 x 10 –5 1.833 x 10 8 929 144 0.09290 3.587 x 10 –8 9.290 x 10 4 0.1111 1.273 x 10 6 6.452 6.944 x 10 –3 645.2 10 6 7.716 x 10 –4 247.1 10 10 10.76 x 10 6 1.550 x 10 9 10 6 0.3861 1.196 x 10 6 2.471 x 10 –4 10 4 10.76 1550.0 3.861 x 10 –7 10 6 1.196 640 27.88 x 10 6 2.590 2.590 x 10 6 3.098 x 10 6 0.2777 1,973.0 0.01 1.076 x 10 –5 1.550 x 10 –3

Conversion Factors S



square mils square mils square mils square rods square rods square yards square yards square yards square yards square yards square yards square yards square yards steres

circular mils sq cms sq inches sq yards roods acres sq cms sq feet sq inches sq meters sq miles sq millimeters sq rods cords

1.273 6.452 x 10 –6 10 6 30.25 0.025 2.006 x 10 –4 8,361.0 9.0 1,296.0 0.8361 3.228 x 10 –7 8.361 x 10 5 0.03305 0.27586

Conversion Factors T



temperature (°C) + 273 temperature (°C) + 17.78 temperature (°F) + 460 temperature (°F) – 32 tons (shipping) tons (long) tons (long) tons (long) tons (metric) tons (metric) tons (short) tons (short) tons (short) tons (short) tons (short) tons (short) tons (short) tons (short)/sq ft tons (short)/sq ft tons of water/24 hrs tons of water/24 hrs tons of water/24 hrs township

absolute temperature (°C) temperature (°F) absolute temperature (°F) temperature (°C) cu feet kilograms pounds tons (short) kilograms pounds kilograms ounces ounces (troy) pounds pounds (troy) tons (long) tons (metric) kgs/sq meter pounds/sq in pounds of water/hr gallons/min cu ft/hr sq miles

1.0 1.8 1.0 5/9 40 1,016.0 2,240.0 1.120 1,000.0 2,205.0 907.1848 32,000.0 29,166.66 2,000.0 2,430.56 0.89287 0.9078 9,765.0 2,000.0 83.333 0.16643 1.3349 36

Conversion Factors V



Volt/inch Volt (absolute)

Volt/cm Statvolts

.39370

.003336

Conversion Factors W



watts watts watts watts watts watts watts watts watts Watts (Abs) Watts (Abs) watt-hours watt-hours watt-hours watt-hours watt-hours watt-hours watt-hours watt-hours Watt (International) webers webers webers/sq in webers/sq in webers/sq in webers/sq in webers/sq meter webers/sq meter webers/sq meter webers/sq meter

Btu/hr Btu/min ergs/sec foot-lbs/min foot-lbs/sec horsepower horsepower (metric) kg-calories/min kilowatts BTU (mean)/min joules/sec Btu ergs foot-pounds gram-calories horsepower-hrs kilogram-calories kilogram-meters kilowatt-hrs Watt (absolute) maxwells kilolines gausses lines/sq in webers/sq cm webers/sq meter gausses lines/sq in webers/sq cm webers/sq in

3.4129 0.05688 107 44.27 0.7378 1.341 x 10 –3 1.360 x 10 –3 0.01433 0.001 0.056884 1.0 3.413 3.60 x 10 10 2,656.0 859.85 1.341 x 10 –3 0.8605 367.2 0.001 1.0002 10 8 10 5 1.550 x 10 7 10 8 0.1550 1,550.0 10 4 6,452 x 10 4 10 –4 6.452 x 10 –4

Conversion Factors Y



yards yards yards yards yards yards yards yards

centimeters feet kilometers meters miles (naut) miles (stat) millimeters rods

91.44 3.0 9.144 x 10 –4 0.9144 4.934 x 10 –4 5.682 x 10 –4 914.4 0.18181

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